What is the time difference between London and Tokyo?

Tokyo (JST, UTC+9) is 9 hours ahead of London in winter (GMT, UTC+0) and 8 hours ahead in summer (BST, UTC+1). Japan does not observe Daylight Saving Time, so the offset changes only when the UK shifts its clocks in spring and autumn.

Does Tokyo observe Daylight Saving Time?

No. Japan abolished DST in 1952 and has not used it since. Tokyo stays on JST (UTC+9) all year. Only London shifts its clocks, which is why the London-Tokyo gap alternates between 9 and 8 hours.

When does the offset change from 9 to 8 hours?

The UK moves clocks forward on the last Sunday in March at 01:00 GMT, entering BST (UTC+1). At that point Tokyo goes from 9 hours ahead to 8 hours ahead. The gap returns to 9 hours on the last Sunday in October at 02:00 BST when the UK reverts to GMT.

What are the best meeting times for London and Tokyo?

The overlap between standard business hours (09:00–18:00) is narrow. When London is at 09:00 GMT it is 18:00 in Tokyo — the very end of the Tokyo workday. A 08:00–09:00 London call is the most realistic option, catching Tokyo at 17:00–18:00 JST.

Is this tool accurate for scheduling?

Yes. It uses the IANA timezone database embedded in your browser — the same source used by operating systems and calendar apps worldwide. Accuracy depends on your device clock being synchronized via NTP, which most devices do automatically.

JST stands for Japan Standard Time. It is UTC+9, used across all of Japan year-round. There is no Japan Daylight Saving Time designation because Japan does not observe DST.

Time Difference: London to Tokyo

Name: Time Difference: London to Tokyo
Availability: InStock
Author: Nham Vu

See the current time in London and Tokyo side by side, with the fixed UTC offset (+9h ahead of GMT, +8h ahead of BST), updated live every second.

London, United Kingdom

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GMT UTC+0

Tokyo, Japan

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JST UTC+9

Current Offset

+9 hours

Tokyo is 9 hours ahead of London

Meeting Overlap Finder

Business hours (09:00–18:00) highlighted — best overlap shaded

London	Tokyo	Status

Convert London Time to Tokyo Time

Based on the current offset — updates automatically

London	Tokyo

Summary